Steam iron



FIG. 1 is an isometric view as seen from the top, front and left side of a steam iron showing our new design;

FIG. 2 is an isometric view as seen from the top, rear and left side thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

Elements shown by broken lines are shown for illustration only and form no part of the claimed design. 

The ornamental design for a steam iron, as shown and described. 